Machine



M. P. HOLMES Sept. 6, 1932.

MINING MACHINE Filed Oct. 15, 1928 5 Sheets-Sheet l 0 n w mm h. 7 A m HMm wmw Sept. 6, 1932. M. P. HOLMES 1,875,333

MINING MACHINE Filed Oct. 15, 1928 5 Sheets-Sheet 2 Sept.,6, 1932.HOLMES 1,875,333

MINING MACHINE:

Filed Oct. 15, 1928 5.Shee ts-Sheet 3 Sept. 6, 1932. M. P. HOLMES1,875,333

MINING MACHINE Filed Oct. 15, 1928 SSheets-Sheet 4 Iowa 122m:MVWJSPIIOZWWS- Sept. 6, 1932. M. P. HOLMES 3 MINING MACHINE Filed Oct.15, 1928 5 sheets-Sheet 5 I Bwenior:

Patented Sept. 6, 1932 'unirsnsreras PATENT OFFICE I MORRIS IE. HOLMES,OFGLAREMONT, NEW HAMPSHIREQAS' SIGNQRTO SULLIVAN MA- CHINERY COMPANY,.ACORPORATION OF MASSACHUSETTS erm ne Macrame Application filed October15, 1923. Serial No. 312,722.

This invention relates to mining machines and more particularly, but notexclusively, to coal mining machines of the continuous cutter, flexiblyfed type. i

An object of this invention is to provide an improved coal miningmachineof the continuous cutter, room andpillar, low vein type having improvedflexible feeding means whereby. the machine may be fedand tom trolled inan improved manner. Another ob;

ject is to provide an improved room and pillar coal minin g DIEIChIIIQOfan extremely low and compact character especially adaptedto use in lowvein work. Still another objecto'f this invention is to provide animproved room and pillar coal mining machine having improved cutting andfeeding mechanisms respectively driven from opposite ends ofthe drivingmotor, thereby rendering the machine exceedingly low and compact.Another object of this inventionisto provide an improved feedingmechanism for a coal mining machine comprising simultaneously orindependently operable feed operating and controlling membersrespectively adapted tocooperate with flexible feeding and controllingelements. Yet another obie'ct is to provide an improved mining machinehavingsimul- Y taneously or independently operable feed operating andcontrolling members and improved clutch mechanism for controlling thesame. A further object is to'pr'ovid'e an improved mining machine havingan improved com act eneral arran ement of arts;

With these and other objectsin view this invention resides in the novelfeatures of construction, formation, combination, and arrangement or"parts to be hereinafter more fully described, claimed, and illustratedin the accompanying drawings in which one embodiment of the invention isdisclosed.

In these drawings,- i

Fig. 1 is a top plan view of the improved mining machine.

F 2 isa rear end clevational view of the machine shown in Fig.1.

3 is atransverse horizontal sectional view illustrating details .ofthemachine feedmechanis'm, parts being shown in top plan.

Fig} 3.

Fig. 4 is a transverse vertical sectional vlew taken substantially online H of Fig. 5 is a detail sectional view taken on line 5-5 of Fig. 3.

Fig. 6 is a central longitudinal vertical sectional view takensubstantially online 6-6 of Fig. l and illustrating details of thecutting mechanism.

Fig. is a central longitudinal vertical sectional view taken on line 77of Fig. 1 and illustrating details of the improved machine feedingmechanism.

Fig. 8 is a transverse vertical sectional view, partially in'elevation,taken substantially on line- 8-8 of F ig..3. I

Fig. 9 is a horizontal sectional view taken substantially on line 9-9 ofFig. 7.

Fig. '10 is a Fig. 11 is' a horizontal section taken substantially online 11-11 of Fig. 7 and'illustrating details of the improved drumcontrol mechanism.

Fig.12 is a fragmentary sectional view' taken on a plane correspondingto Fig. 11 and illustrating parts a diflerent position. Fig. 13 is asimilar view illustrating the parts in still another position. i p pFig. 14 is a detail sectional view taken on 'line14'14 of Fig.13. I I

Fig. "15 is a sectional view similar to Figs 12 and '13 illustrating theparts in still another position.

i Fig. 16 is a detail sectional view taken on line 1616.of Fig. 15.

In this illustrative embodiment of the invention therej is'shown' amining machine designated as-an entirety by the reference.

detail section taken on line. 10l0 of Fig. 9. I

and compact character especially adapted to use in low vein work. Theimproved mining machine 1 comprises a machine frame 2 having a bottomplane surface 3 upon which the machine is slidably supported on the minebottom during operation of the machine.

6 being wound upon a feed operating memher or drum 8 while thecontrolling cable 7 is wound upon a controlling member or drum 9. Thefeed and controlling drums 8 and 9 are coaxially arranged in asuperimposed .relation on a vertical axis at the rear end of themachine,i. e., the end of the machine remote from, the cutter bar. Referringmore particularly to the machine it will be noted that the same hereincomprises three sections, i. e., a motor section 10, a feed section Y11,and a cutter carrying section 12 the feed and cutter sections beingherein disposed at opposite ends of the motor section and rigidlyconnected'to the latter in such manner as to form a rigid and very low,compact frame slidable 011 the mine bottom.

In specifically describing the improved 'cuttingmechanism it will hereinbe noted electric reversible type, having its armature that housedwithin the motor section is a driving motor, herein preferably of theshaft 13 horizontally disposed and extending longitudinally of themachine. Suitably 'lixed to the forward end of this armature shaft, asshown in Fig. 6, is a bevel pinion 14 which meshes with a bevel gear 15herein formed integral with a vertical shaft 16. This shaft 16 issuitably journaled in ball bearings 17 and has also formed integraltherewith a spur pinion 18 meshing with a :larger spur gear 19. The.spur gear 19 has a depending hub portion 20 journaled on ball roundingthe stud 22.

bearings 21 surrounding and supported by a vertical stud 22. Asshown,-the stud 22 is threadedly connected at its opposite ends as at 23to detachable cap members 24 and 25 respectively suitably bolted to themachine frame. The depending sleeve portion 20 of the gear 19 isconnected by a semi-permanent clutch 26 to a clutch member 27 havingexternal clutch teeth 28 and a hub portion 29 sur- Rotatably mounted onthis hub 29 is a similar clutch member 30 connected as by asemi-permanent clutch 31 to the hub of a cutter chain drive sprocket 32.This cutter chain drive sprocket 32 is rotatably mounted on ballbearings 33 surrounding and supported by the vertical stud 22. The hub29 of the clutch. member 28 is within the idler gear 56 in turn mesheswith a spur gear interposed between the lower bearing 21 for the gear 19and the upper bearing 33 for the sprocket 32. The bearings 33 and thesprocket 32 are maintained in operative relation by means of acup-shaped member or step bearing 34 in turn held in position by adetachable bottom plate 35. The frame section 12 is provided with adepending cylindrical portion 36 having formed therein a bore 37 withinwhich is vertically reciprocable a cylindrical clutch shipper member 38connected to a clutch member 39 having internal clutch teeth adapted tocooperate with the teeth on the clutch members 27 and 30. As shown inFig. 6 the clutch shipper member 38 is adapted to be shifted axially bymeans of a lever 40 pivotally mounted at 41 in a suitable manner withinthe machine frame and-connected at 42 to the clutch shipper member. The

other end of this lever is pivotally connected .at 43 to a link 44 inturn pivotally connected at 45 to an arm 46. This arm is suitably fixedto ahorizontal shaft 47 extending transcutter bar 4 has formed thereonan upstanding annular portion 49 mounted on thedepending portion 36 ofthe machine frame and rigidly fixed to the frame by screws 50. Z

The lower portion of the cutter bar has an annular bottom support 51surrounding and supported by the step-plate 34. It will be evident thatwhen the clutch member 39 is in the position shown in Fig. 6 the clutchmem- 1 bers 27 and 30 are connected and as a result the cutter chaindriving sprocket 32 is connected in .drivingrelation with the motor. Thecutter chain drive sprocket may be disconnected from the motor by simplyshifting 3 the member 38 upwardly thereby discounect ing the clutchteeth on the member 39 from the teeth on the clutch member 30.

As shown in the drawings, the improved machine feeding mechanismspecifically comprises a spur pinion 55 fixed to the rear end -of' thearmature shaft 13. This motor pinion 55 meshes with a spur idler gear 56(see Fig. 3) journaled on ball bearings 57 supported by a horizontalstud 58 suitably fixed feed frame section 11. This 59 keyed at 60 to ahorizontal shaft 61 rotatably mounted in ball bearings 62 suit ablysupported within the feed frame section. The, shaft 61 has herein formedintegral therewith a bevel pinion 63 meshing with a bevel gear 64 keyedat 65 to a horizontal shaft 66 extending transversely of the machine. toat its inner end by a key 67 a spur gear 68, the hub of the latter beinginternally bored to receive a ball bearing 69. This ball The shaft 66has secured therebearing is supported by a projecting stud or section.

may readily be removed from their respective shafts and replaced bygearsof different tooth ratio to obtain different predetermined feedingspeeds to suit different mining condi-.

tions. As shown, the inner end of the shaft 77 is journaled through aball bearing 78 carried within a bore formed within the hub of the spurgear 75. The ball bearing 78 is supported by a stud or dowel 79 similarto the stud 70. The opposite end of the shaft 77 is journaled in a ballbearing 80 suitably carried within adetachable bearing bracket 81 inturn supported on a dowel pin or stud 82 similar to the stud 74. It willbe observed that the shafts 66 and 77 have respectively rigidly securedthereto intermediate their ends worms 83 and 84, the former having teethinclined in the same direction but of steeper lead than the latter. TheWorms 83, 84 rotate relative to each other in opposite directions andrespectively mesh with coaxially arranged worm gears 85 and 86 disposedon a vertical axis. (see Fig. 8). These worm gears each have hubportions respectively journaled on ball bearings 87 and 88 suitablycarried by the machine frame. These hub portions each carry spacedalined ball bearings 89 and 90 Within which a vertically disposed shaft91 is journaled. This shaft 91 has herein preferably formed integraltherewith intermediate its ends an elongated spur pinion 92 which mesheswith 'a large spur gear 93 keyed at 94 to a hollow vertical shaft 95,which is herein the main feed shaft. The shaft 95 is disposed at thelongitudinal center of the machine and ournaled at its upper end in aball bearing 96 positioned by a detachable plate 97 and its lower end inab-all bearing 98 suitably mounted within the machine frame.

The mechanism for alternatively frictionally connecting the fast andslow speed worm gears 85, 86 to the shaft 91 to effect rotation of thedrums 8 and 9 at different speeds in opposite directions comprisesapivoted shipper yoke 99 (see Figs. 3 and 8) carrying at its inner endsuitable rollers 100 journaled on pins 101 carried by the arms of theyoke. These rollers are adapted to engage the plane surfaces of axiallymovable cylindrical clutch applying members or pressureplates 102 and103, each having internal teeth 104' interlocked with the teeth of, thepinion 92. The pressure plate 102 may load a series of clutch discs 105carried by a member 106 connected to the plate 102 and held in positionwithin the a gear 85 by means of a split ring 107. The clutch plates 105are interleaved with a series of clutch plates 108 carried by-the gear85. The pressure plate 103 may load a series of clutch discs 109 carriedby a member 110,

similar to the. member 106, connected to the plate 103 and similarlyheld in its gear by a split ring 111. The clutch discs 109 areinterleaved with a series of clutch discs 112 carried by the gear 86.The split rings 107, 111 are seated within annular grooves 113 formed intheir respectivev gears and parts 106, have flanges 114 engaging Y theircooperating rings. In accordance with the illustrative form of theinvention the outer end of the shipper yoke 99 is provided with abifurcated portion 115, the arms of which carry pins-116 on whichrollers 117 are mounted. These rollers engage at their tops a andbottoms washers 118 guided on bolts 119 (see Fig.5) threadedly connectedat 120 to an abutment member 121 rigidlysecured at 122 to the side ofthe feed frame section. Interposed between the washers 119 and similarwashers 122 and encircling the side bolts 118 are coiled springs 123,the washers 122 engaging ad ustable abutment members 124 and 125respectively threadedly connected at 126 within the frame section. Itwill thus be evident that the washers 118 and coil springs 123 togetherwith their cooperating elements .form a yieldable pivotal mounting forthe shipper yoke 99, the coil springs being adapted to'yield uponoverload of either of the controlling clutches. The shipper yoke 99 isadapted to swing about its pivot by means comprising a crank pin oreccentric 127 formed integral with a rotatable rod '128 fects rotationof the eccentric 127 and consequently vthe shipper yoke 99 is swungabout its pivot and one or theother of the controlling clutches withlnthe worm gears 85, 86 1s applied thereby causing rotation of the-shaft91 at either a fast speed in one direction or at a slow speed in theopposite direction. The

crank pin or eccentric 127 locks the shipper yoke in either its raisedor lowered position when the center of the eccentric passes the verticalcenter of the rod 128.

The improved mechanism for effecting drum rotation and forsimultaneously or independently connecting the drums in driving relationwith the motor will now be described. Referring more particularly toFigs. 7 and 8 it will be observed that the main feed shaft'95 has formedintegral therewith at itslower end a spur pinion meshing with aninternal gear 136 disposed within and arranged coaxially with'the upperfeed drum 8. As shown in Fig. 7 this'internal gear 136 is provided witha depending cylindrical flange having an inwardly projecting flangedportion 137 secured by screws 138 to amain bearing bracket 139. Thisbearing bracket 139 has its hub 140 journaled in a ball bearing 141supported within a bracket 142. This latter bracket 142 has anupstanding cylindrical flange which fits a bore formed within themachine frame, this flange forming a cup-shaped recess which is adaptedto receive lubricant for lubricating the bearings. The lower end of thebracket 139 is journaled on a ball bearing 143 supported by a detachablebottom plate 144. It will thus be seen that the internal gear 136 andbearing bracket 139 rotate together. As illustrated, extending axiallythrough the hub 140 of the bracket 139 is a verticalstud 145 threadedlyconnected at 146 within the feed frame section. Threaded on the lowerend of the stud is a nut 147 whichwhen tightened is adapted to maintainthe bracket 142, the bot tom plate'144, and the parts supported therebyin assembled relation. The lower controlling drum- 9 is supported on theradial flange 149 of a bearing sleeve 150 journaled on ball bearings 151supported by a sleeve 152 carried by the main bearing bracket 139, thisbearing bracket having an outwardly projecting flange 153 whichunderlies the flange on the sleeve 152 to thereby support the latter.The upper feed drum 8 is rotatably mounted on'ball bearings 154supported by the lower drum9. Interposed between the adjacent surfacesof the drum flanges is a packing ring 155 which prevents entry offoreign matter through the space between the drums to the ball bearings.Similar packings are provided between the bottom flange of the lowerdrum and the frame, and be tween the bracket 139 and the bottom plate,and these packings likewise prevent entry of dirt or other foreignsubstance to the moving parts. In this improved construction a rotatablecontrol cam or control member 156 is journaled on a bearing sleeve 157supported by the hub of the rotatable bracket 139. This member 156 hasformed thereon aplurality of upper cam surfaces 158, herein four, whichare adapted to engage a plurality of driving discs or plungers 159slidably mounted within radial slots 161 formed in the depending flangeof the internal gear 136. Disposed be- ].ow and offset from the camsurfaces 158 on the control member is a second series of cam surfaces162'which are adapted to engage a plurality of driving discs or plungers163 disposed below and engaging andsupporting the discs 159. These discs163 are likewise .slidably mounted within the slots 161. formed in theflange of the internal gear. Formed on the periphery of the controlmember 156 and disposed between the cam surfaces158 and l62thereon are aplurality of recesses 164' adapted toreceive the discs 159 and 163incertain positions of the control member. These plungers 159 and 163 areadapted to be slid into engagement with recesses 165 and :166respectively formed on the inner periph i cries of the drums 8 and 9 aswill later be described. The mechanism for effecting rotation of thecontrol cam 156 to cause actuation of the plungers 159 and 163 comprisesa spur gear 167 arranged in axial alinement with the drum axes andmeshing with a spur gear 168 journaled on ball bearings 169. These ballbearings are supported on a stud 170 carried by a radially extendinghorizonv tal arm 17lherein formed integral with the stationary bracket142. Meshing with this spur gear 168 is a spur pinion 173 preferablyformed integral with a rotatable control shaft 17 4 extending axiallythrough the hollow shaft 95. As shown in Fig. 7 the upper end of thecontrol shaft 174 is slotted at 175 and arranged in this slot and'pivotally mounted at 176 on the shaft is an operating and locking lever177. Surrounding the upper end of the shaft 174 is a cup-shaped stopmember 178 for the lever 177 having slots'through which the arms of thelever project. An annular locking ring 179 is clutched at 180 to theshaft 95 and is held in position by a flanged nut 181 threadedlyconnected to the shaft 95. As shown in Fig. 1 this locking ring has aseries of locking recesses or notches 182 formed therein with which thelocking portion 1830f the lever 177 selectively cooperates. Stop membersor abutments 183 project upwardly from the ring 179 and these stopslimit'movement of the'lever177 so that the latter can turn only betweenthe stops. Mounted within the upper end of the shaft 174 is a springpressed plunger 184 which is engageable with. a recess or notch 185formed on the lever and this plunger maintains the'lever in itsoperative locking position. From the foregoing it will upper drum 8 tothe motor, it being understood that both drums are released from thedriving gear 136, the operator rotates the shaft 174 and thereby rotatesthe control member 156 through the gearing 173, 168, 167 to the positionshown in Figs. 7 and 11. 1

When the control member is rotated into this position the upper camsurfaces 158 engage the upper plungers 159 moving them from the positionshown in Fig. 16 to the position shown in Fig. 7 thereby locking theupper feed drum 8 directly to the driving gear 136. When the parts arein this position the plungers 163 are released from the lower drum 9 anddisposed within certain of the recesses 164 formed in the control member156. If it is desired to effect drive of both drums the control member156 is rotated still further counter-clockwise from the position shownin Fig. 11 thereby causing the lower cam surfaces 162 to force the lowerplungers 163 from the recesses 164 in the control member into therecesses 166 formed in the lower drum 9 thereby locking this drumdirectly to the driving gear 136. It is therefore evident that bothdrums 8 and ,9 may be positively locked to the driving gear 136 forrotation therewith. t certain times during feeding of the machine it isdesirable to release the upper feed drum 8 from the motor while rotationof the lower control drum 9 continues and this is accomplished byrotating the control member into the position shown in Fig. 12 with theupper driving plungers 159 disposed within certain of the recesses 164in the control member while the lower plungers 163 are held within therecesses 166 in the lower drum 9 by the cam surfaces 162, the upperplungers being released from the recesses 165 in the upper feed drum atthat time. It will also be evident that upon suitable actuation of thefriction clutches within the fast and slow speed worm gears 85 and 86the drums 8 and 9 may be driven simultaneously or independently at afast speed in one direction and at a slow speed in the oppositedirection as will later be described.'

As shown in Figs. 1 and 2 suitable guide sheaves or rolls 190 and 191are provided at opposite sides of the forward end of the machineandthese guide sheaves are mounted on swing arms 192 detachably connectedby screws 193 to the sides of the frame section 12. It will also benoted thatjmounted at the left hand side of the upper feed drum 8 at therear end of the machine as viewed in Fig. 2 is a guide sheave or roll194 suitably journaled on the machine frame for guiding the feed cable6. Disposed at the opposite side of the machine is a double guide rollor sheave 195 adapted to guide the cables extending fromboth drums.Disposed below the guide sheave 194 is a non-rotatable guide 196having'a lateral projection 197 for preventing the cableon the upperdrum from drojiiping downwardly ontothe lower drum. These" guides "190,191, 194, 195, 196 are adapted to guide the cables 6 and 7 during thevarious operations of the machine as will later be described. 'Moreoverit will be noted that the motor housed within the frame section 10 isadapted to be controlled by any suitable electrical controllingapparatus including a controller handle 198' conveniently locatedadjacent the clutch controlling handle 130. i

The operation of the improved mining machine is as follows: Let it beassumed that the machine is positioned adjacent the coal face at therighthand rib and is about to make a sumping cut beneath the face. Whenthe" machine is so positioned the feed cable 6 is extended from theupper feed drum 8 rear-" wardiy around the guide sheave 194 and thenforwardly longitudinally of the machine around the front guide sheave190 to a suit able. anchor or roof jack disposed adjacent the'coal face.The controlling cable 7 iseX tended from the lower controlling drum 9rearwardly aroundthe guide roll 195 and then laterally of the machine toa suitable anchor or roof jack adjacent the right hand rib. The operatorthen grasps the controller handle 198 and starts the motor. The controlhandle 48 is then manipulated moving.

the clutch member39 to the position shown in Fig.6 thereby connectingthe cutter chain driving sprocket 32 to the motor and as a result thecutter chain 5 is rapidly circulated about the outer edges of the cutterbar ,4. The operator then grasps the control lever 174 and rotates thecontrol member 156 to the position shown in Figs. 7 and 11 therebycausing the cam surfaces 158 to move the lockingplungers 159 intoengagement with the, upper feed drum 8 thereby connecting the latter tothe driving gear 136. The operator then grasps the control handle 130and swings the shipper member 99 to effect application of the slow speedclutchl09, 112. The feed drum is then driven at aslow speed from themotor through gearing 55, 56, 59,

63, 64, 68, 75, worm gearing 84, 86, spur gear- I ling 92, 93, 135, andinternal gear 136 and rotating the latter together with the upper feeddrum 8 at a slow speed, winding in the cable 6, and sumping the cutterbar 4 beneath the face of the coal. After the cutter bar has been sumpedbeneath the coal face the operator moves the control member 156 torelease the plungers 159 from the upper feed drum thereby moving theparts to the position shown in Figs. 15 and 16 with both drums releasedfrom the drive and the anchor or roof jack adjacent the face is knockeddown and moved to a point adjacent the left hand rib and the feed cable6 is then eX- tended laterally from the front guide roll 190 to theanchor. the control member 156 to the position shown in Fig. ;12therebymoving the lower plungers 163' within the recesses 166 in thebottom drum 9, connecting this drum to the drive.

The fast speed controlling clutch 105, 108

within the fast speed gear is then applied and the controlling cable 7on the bottom The operator then rotates I drum 9 is 'then wound in at ahigh speed thereby straightening the machine up so that its longitudinalaxis is substantially per pendicular to the coal face, the machine thenbeing in the position shown in Fig. 1. The fast speed clutch is thenreleased and the control member 156 moved to the position shown in Figs.13 and 14.- with the locking plungers 159, 163 moved into lockingengagement with both drums. The slow speed clutch within the slow speedworm gear 86 is then applied and the drums 8 and 9 are rotated togetherwinding in the feed cable 6 at a slow speed while the control cable 7 isslowly paid out and as a result the machine is fed laterally at acutting speed relative tothe coal face. If itis desired-to angle the.machine relative to the coal face, for instance, if a sulphur ball orsome similar unduly hard substanceis encountered by the cutter bar, theoperator may release the upper feed drum 8 from its drive and connectthe lower control drum 9 to the fast speed drive thereby-causing thecontrol cable 7 to be wound inldrawing the rear end of the machinelaterally toward the right hand rib and angling the machine relative tothe face. The machine may be angled in the opposite direction bydisconnecting the lower control drum 9 from its drive while rotation ofthe upper feed drum 8 continues thereby causing the rear end ofthemachine to be swung forwardly. After the transverse cuttin operation iscompleted the machine is ang ed in a usual manner relative to the face.The feed cable 6 is then disconnected from its anchor and extendedrearwardlyof the machine to a suitable anchor and upon rotation of thefeed drum 8 the cutter bar is withdrawn from the face. The machine isadapted to be hauled about the mine at a fast speed by means of thelower control drum 9-and its cooperating cable. It is obvious that thema= chinemay cut from left to right by reversing the motor,- rewindingthe cables on their re spective drums, and reversing the position of thecutter bits. 7

As a result of this invention itwill be noted that. an improved miningmachine of the flexibly fed continuous cutter room and pillar type isprovided which is of anexceedingly low and compact constructionespecially adapted to use in mines having narrow or thinvei-ns of coal.It will further be noted that an improved mining machine is providedhaving improved. flexible feeding means comprising coaxial drumsrotatable about a vertical axis and so arranged'as to produce anexceedingly low machine while drums, of comparatively large diameter areretained. It. will still further be noted that by pro 'vidingtheimproved controlling means withinthe drumsitispossible to eflect simuhtaneous or independent rotation of the drums. It'will further beobserved that during feeding of the machine. during the cuttingoperation the feed drum winds in its cooperating cable at a slow speedwhile the control cable is unwound or paid out at a corresponding speedand that upon application of the fast speed clutch the control. cable 7may be wound in at a relatively high speed. It will further be notedthat the control means for the drums is exceedingly simple, a one-dialcontrol being employed for controlling both drums thereby greatlysimplifying and facilitating control of the machine. These and otheradvantages of the improved mining machine will, however, be-clea-rlyapparent to those skilled in this art.

While I have in this application specifically described one form whichthe invention may assume in practice, it will be understood that thisform of the same is shown for purposes of illustration and that theinvention may be modified and embodied in various other forms withoutdeparting from its spirit or the scope of the appended claims.

lVhat I claim as new and desire to secure by Letters Patent is:

1. In a mining machine, a horizontal motor having'its power shaftextending longitudinally of the machine, cutting mechanism driven fromone end ofsaid motor, and feeding mechanism driven from the opposite endof said motor including coaxially arranged relatively rotatable feedoperating and controlling members each adapted to cooperate withflexible feeding means, and plural speed driving gearing for drivingsaid members at one. speed in one direction and at a different speed inthe opposite direction while said motor operates continuously in thesame direction. v

2. In a mining machine, a horizontal motor having its power shaftextending longitudinally of the machine, cutting mechanism driven fromone end of said motor, and feeding mechanism driven. from the oppositeend of said motor including coaxially arranged relatively rotatablefeedoperating and controlling members disposed cn a vertical axis andeach adapted to cooperate with flexible feeding means, and plural speeddriving gearing for driving said feedoperating and controlling memberseither independently of the other.

other. at a slow. speed in one direction and at till lCS

lll)

a relatively high speed in the opposite di-, rection.

4:. In a mining machine, a motor, and machine feeding mechanism driventhereby including coaxially arranged relatively rotatable feed operatingand controlling members disposed on a vertical axis and each adapted tocooperate with flexible feeding means, and means for connecting saidmembers both si' multaneously or either independently of the other indriving relation with said motor.

5. In a mining machine, a machine frame slidable on its bottom on themine bottom, a horizontal motor thereon having its power shafthorizontally disposed and extending longitudinally of said frame,cutting mechanism driven from one end of said motor and including acutter bar projecting from said frame, and feeding means driven from theopposite end of said motor comprising coaxial relatively rotatable feedoperating.

and controlling members each adapted to cooperate with flexible feedingmeans ,and disposed on a vertical axis, and means driven by said motorfor driving either of said members independently of the other.

6. In a mining machine, a machine frame slidable on its bottom on themine bottom, a horizontal motor thereon having its power shafthorizontally disposed and extending longitudinally of said frame,cutting mechanism driven from one end of said motor and including acutter bar projecting from said frame, and feeding means driven from theopposite end of said motor comprising coaxial relatively rotatable feedoperating and Con trolling members each adapted toco'operate withflexible feeding means and disposed on a vertical. axis, and meansdriven by said motor for driving said members both simulta-- neously oreither independently of the other. 7. Ina mining machme,a machine frameslidable on its bottom on the mine bottom, a

slidable on' its bottom on the mine bottom, a

motor, cutting mechanism driven by said mo.- tor and including a cutterbar"proect1ng from said frame, and feedingmeans driven by said motorcomprising coaxial relatively rotatable feed operating and controllingineriibers each -adapted to cooperate with-flex r le feeding means anddisposed en a vertical axis atthe end of the machine remote from saidbar, and means driven'bysaid motor for driving said'mem-bers bothsimultaneously or either independently of the other.

9. In a minlng machine, a motor, and ma chine feeding means driventhereby including coaxial relatively rotatable feed operat- 5 ing andcontrolling members arranged in substantially end abutting relation withtheir axes parallel to, a transverse vertical plane and each adapted tocooperate with flexible feeding means, a driving member, and clutchmechanism for connecting said feed operating and controlling membersboth simultaneously or either independently of the other to said drivingmember.

10. In a mining machine, a motor, and

machine feeding means driven thereby comprising coaxial feed and controldrums, a driving member arrangedc'oaxially with and disposed Within saiddrums, relatively movable plungers carried by said driving member, andcommon control means for actuating said plungers to independentlyconnect said drums to said driving member.

11. In a mining machine, a motor, and ma chine feeding means driventhereby comprising coaxial relatively rotatable windingdrums, a drumdriver member arranged coaxially with and disposed within said drums,and common control means carried by said driver member for independentlyor simultaneousl connectin said drums directl b thereto for rotationtherewith.

13. In a mining machine, a motor, and machine feeding means driventhereby comprising coaxial relatively rotatable winding drums, a drumdriver member arranged coaxially with and disposed within said drums,elements carried by said driver member and engageable with said drumsfor independently connecting the latter to said driver member forrotation therewith, and rotatable ill) means engaging said elements foractuating the same.

14:. In a mining machine, a machine'frame adaptedto rest upon andslidein any direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven by said motorincluding relatively rotatablefeed operating and controlling memgberseach rotating on a vertical axis and adaptedto cooperate directly withflexible feeding means :and motor operated driving .andcontrollingmechanism for. said membersforefi'ecting rotation of one ofsaid mem bers in a direction to draw in its respective flexible feedingmeans at a relatively slow speed and for rotating saidother member 1 ina direction to pay out its respective flexible feeding means at asimilar speed, means whereby rotation: of one of said members may beeffected at a speed slower than said other member, and mechanism drivenby said 7 motor for effecting rotation of said paying- 10 out member ina direction to draw in its respective flexible feeding means withoutreversing said motor or changing the relation of said flexible meanswith respect thereto.

15. In a mining machine, a machine frame adapted to rest upon and slidein any direction overthe mine bottom, a motor carried by said'frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven '20 by said motorincluding coaxially arranged relatively rotatable feed operating andcontrolling members rotating on a vertical axis and adapted to cooperatedirectly with flexible feeding means and driving andcontrollingmechanism for said members for effecting rotation of one ofsaid members in a direction to draw in its respective flexible feedingmeans at a relatively slow speed and for rotating said other member in adirection to pay out its respective'flexible feeding means at a similarspeed, means whereby rotation of one of said members may be effected ata speed slower than said other member, and mechanism driven by saidmotor for effecting rotation of said paying-out member in a direction todraw in its respective flexible feeding means.

16. In a mining machine, a machine frame adapted to rest upon and slidein any direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a lrerf cutterprojecting from said frame, and feeding means driven by said motorincluding relatively rotatable coaxially arranged feed operating andcontrolling members rotating on a vertical axis and each adapted tocooperate directly with flexible feeding means and driving andcontrolling mechanism for effecting rotation of said memberssimultaneously at either a relatively high speed'or a relatively lowspeed and mechanism operable at will for disconnecting either memberfrom its drive while the other member is driven. 17. In a miningmachine, a machine frame adapted to rest upon and sl de in any directionover the mine bottom, a motor carried by said frame, cutting mechanismdriven by said motor inclnding'a kerf cutter projectingfrom said frame,and feeding means for the machine including a pluraiity of relativelyrotatable coaxially arranged feed opcrating and controlling membersrotatable on a vertical axis and each adapted to co operate directly Mitlrflexible feeding means,

and driving and controlling means for said members for rotating the sameeither separately 'or both simultaneously at either a relatively highspeed or. at a relatively low speed.

18. In a mining machine, a machine frame adapted to rest upon and slideinany direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means for the machine-includinga plurality of relatively rotatable feed operating and controllingmemberseach adapted to cooperate directly with flexible feeding means,and driv ing and controlling means for said members for rotating thesame either separately or both simultaneously at either a relativelyhigh speed or at a relatively low speed and including fast and slowspeed transmission means for said members including coaxial fastand'slow speed terminal gears arranged with their axes vertical andfriction clutches coaxial with said gears, one individual to each gear,for selectively connecting said gears in driving relation with saidmembers.

19. In a mining machine, amachine frame adapted'to rest upon and slidein any direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means for the machine includinga plurality of relatively rotatable feed operating and controllingmembers each adapted to cooperate directly with flexible feeding means,and driving and controlling means for said members for rotating the sameeither separately or both simultaneously at either a relativelyhighspeed or at a relatively low speed and including fast and slow speedworm gear trains selectively operative to drive said members at fast andslow predetermined speeds, said gear trains each including a wormwheel'rotating about a vertical axis.

20. In a mining machine, a machine frame adapted to restupon and slidein any direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means for the machine includinga plurality of relatively rotatable feed operating and controllingmembers each adapted to cooperate directly with flexible feeding means,and driving and controlling means for said members for rotating the sameeither separately or both simultaneously at either relatively high speedor at a relatively low speed and including fast and slow speed worm geartrains selectively operative to drive said members at fast and slowpredetermined speeds, said gear trains each including a worm wheelrotating about a vertical axis andfriction clutches forselectivelyconnectposed on a vertical axis at tie end of saic frameremote from the end thereof from which the kerf cutter projects and eachadapted to cooperate with flexible-feeding means, and driving andcontrolling means for said'members for driving said members eitherindependently or both simultaneously at either a'relatively fast or arelatively slow speed.

22. In a. mining machine, a machine frame adapted to rest upon and slideinany direction over the mine bottom, a motor carried by said frame,cutting mechanism' driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven by said motorincluding coaxially arranged relatively rotatable feed operating andcontrolling members disposed on a vertical axis and each adapted tocooperate with flexible feeding means and driving and controlling meansfor said members for independently or simultaneously driving said'members at either a relatively fast speed or'a relatively slow speedincluding a rotatable driving member coaxial. with said members, clutchdevices carried by said driving member, and means for actuating saidclutch devices to connect either or both of said feed operating andcontrolling members to said driving member.

23. In mining machine, a machine adapted to rest upon and slide in anydirec tion over the mine bottom. a motor carried by said frame. cuttingmechanism drivenby said motor including a kerf cutter projecting fromsaid frame, and feeding means driven by said motor including coa'xiallyarranged relatively rotatable feed operating and controlling membersdisposed on a vertical axis and each adapted to cooperatewith flexiblefeeding means and driving and controlling means for said members forindependently or simultaneously driving said members at either arelatively fast speed or a relatively slow speed including a rotatabledriving member disposed within said members, a secured to said drivingmember, a pinion meshing with said gear, a hollow transmission shaftdriving said pinion, clutch devices carried bysaid driving member, andmeans including an operating element extendimg through said hollow shaftand said pinion for actuating said clutch devices to connect either orboth ofsaid feed operating relatively rotatable feed operating andcontrolling members 'dlsposed on a vertical axis frame and controllingmembers to said driving member. M 1

24. In a mining machine,'a machine frame adapted to rest upon and slidein any direc tion over the mine bottom. a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven by said motorincluding coaxially arranged and each adaptedto cooperate with flexiblefeeding means and driving and controlling means for said members forindependently or simultaneously driving said members at either arelatively fast speed or a relatively slow speed including a rotatabledriving member coaxial with said members clutch devices carried by saiddriving member for connecting either or both of said feed operating andcontrolling members thereto and including clutch elements shiftable intoengagement with'either member, and a rotatable cam device forshiftingsaid clutch devices.

25. In a mining machine, a machine frame adapted to rest upon and slidein any direc' tion over the mine bottom. a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven by said motorincluding relatively rotatable coaxially arranged feed operating andcontrolling members disposed on a vertical axis and, each adapted tocooperate with flexible feeding means, and driving and controlling meansfor said members including clutch devices, operable at will, forconnecting either or both of said members in driving relation with sandmotor...

' 26. In a mining'machine. a machine frame adapted to rest upon and,slide in any direction over the mine bottom, a motor carried by saidframe, cutting mechanism driven by said motor including a kerf cutterproj ect -1I1 Z' from said frame, and feeding means driven by said motorincluding relatively rotatable coaxially arranged feed operating andcontrolling members disposed on a vertical axis and each adapted tocooperate with flexible feeding means, and driving and controlling meansfor said members including frictionally controlled fast and slow speedtransmission means and clutch devices, operable at will, for connectingeither or both I of said members in driving relation with saidtransmission means. 1

27. In amining machine, feeding mechanism including relatively rotatablefeed operating and controlling drums arranged in substantially endadapted to cooperate witha flexible feed cable, and mechanism forseparately or simultaneously driving said drums including, a rotatabledriver member d1 sposed with m sa 1d drums and on which said drums arerotatably abutting relation each cluding an operating supported, andclutch devices for connecting either or both drums to said member.

28. Ina mining machine, feeding mechanism including relatively rotatablefeed operating and controlling drums each adapted to cooperate with aflexible feed cable, and

mechanism for separately or simultaneously driving said drums includinga rotatable driver member disposed within said drums and clutch devicesfor connecting either or both drums to said member and includingslidable plungers carried by said driver member, and cam means foractuating said plungers. i

29; In a mining machine, feeding mecha nism including relativelyrotatable feed op .erating and controlling drums each adapted tocooperate with a flexible feed. cable, and mechanism for separately orsimultaneously driving said drums including a rotatable driver memberdisposed within said drums and clutch devices for connectirw either or.both drums to said member and including operate with a flexible feedcable, and mechanism for separately or simultaneously driving said drumsincluding a rotatable driver member arranged coaxially with said drums,means for. rotating said member including a hollow transmission shaft,clutch devices car- .ried by said member for connecting either or bothof said drums thereto, and actuating means for said clutch devicesincluding an operating element extendlng through said hollow shaft. v

31. In a mining machine, feeding means including relatively rotatablefeed operating and controlling drums each adapted to cooperate with aflexible feed cable, and mechanism for separately or simultaneously driv.ing said drums including arotatable driver member arranged coaxiallywith said drums, means for rotating said member including a hollowtransmission shaft, clutch devices carvried by said member forconnecting either or both of said drums thereto, and actuating means forsa1d clutch devices including a rotatable operating member disposed onan axis coaxial with said driver member and rotating means for saidclutch operating member inelement extending through said hollow shaft. l

32. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom, a

horizontal motor having its power sha t exl tending longitudinally ofthe machine, and cutting mechanism driven from one end of sa1d 'motor,of feeding and guiding. mechanism driven from the opposite end of saidmotor and including coaxially arranged relatively rotatable feedingmembers arranged in substantially end abutting relation and disposed onaxes lying in a vertical transverse plane and each adapted to cooperatedirectly with flexible feeding means, and means for separately orsimultaneously connecting said members in driving relation with saidmotor.

' 33. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom, a horizontal motorhaving its power shaft extend ing longitudinally of the machine. andcutting mechanism driven from one end of said motor, of feeding andguiding mechanism driven from the opposite end of said motor andincluding coaxially arranged relatively rotatable feeding membersdisposed on avertical axis and each adapted to cooperate directly withflexible feeding means, and means for separately or simultaneouslyconnecting said members in driving relation stantially end abuttingrelation and disposed on axes lying in a vertical transverse plane andeach adapted to cooperate directly with flexible feeding means, andplural speed driving gearing between sa1d motor and said 'members fordriving said members either separately or simultaneously at relativelyhigh speed or at relatively low speed.

35. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom, a hori- Zontal'motor having its power shaft extending longitudinally of the machine,and cutting mechanism driven from one end of said motor, of feeding andguiding mechanism driven from the opposite end of said motor andincluding-coaxially arranged relatively rotatable feeding membersdisposed on a vertical axis and each adapted to cooperate directly withflexible feeding means, and plural speed driving gearing between saidmotor and said members for driving said members either separately orsimultaneously atrelatively high speed or at relatively low speed.

86. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom, a horizontal motorhaving its'power shaft extendng longitudinally of the machine, andcutting mechanlsm driven from one end of said motor, of feeding andguiding mechanism driven from the oppositeend of said motor andincluding coaxially arranged relatively rotatable feeding membersdisposed on axes lying in a vertical transverse plane and each adaptedto cooperate directly with flexible feeding means, and plural speeddriving gearing between said motor and said members for driving eitherof said members separately or both simultaneously at a relatively lowspeed in one direction and at a relatively high speed in the oppositedirection while said motor runs continuously. in the same direction.

87. In. a mining machine, the combination with a machine frame slidableon its bottom on the mine bottom, a horizontal motor thereon having itspower shaft horizontally disposed and extending longitudinally of saidframe and cutting mechanism driven from one end of said motor andincluding a cutter bar projecting from said frame, of feeding meansdriven from the opposite end of said motor comprising coaxial relativelyrotatable feed operating and controlling members arranged insubstantially end abutting relation and disposed on axes lying in atransverse vertical plane and each adapted to cooperate with flexiblefeeding means and disposed at the end of the machine remote from saidbar, and means driven by said motor for independently driving saidmembers.

38. In a mining machine, the combination with a machine frame slidableon its bottom on the mine bottom, a horizontal motor thereon having itspower shaft horizontally disposed and extending longitudinally of saidframe and cutting mechanism driven from one end of said motor andincluding a cutter bar projecting from said frame, of feeding meansdriven from the opposite end of said motor comprising coaxial relativelyrotatable feed operating and controlling members arranged insubstantially end abutting relation and disposed on axes lying in atransverse vertical plane and each adapted to cooperate with flexiblefeeding means and disposed at the end of the machine remote from saidbar, and means driven by said motor for simultaneously or independentlydriving said members.

39. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over. the mine bottom and cuttingmechanism mounted thereon including a forwardly projecting cutter bar, acutter driving sprocket at the forward end of said frame and a motorarranged centrally on said frame for driving said sprocket; of feedingand guiding mechanism driven by said motor comprising two flexiblefeeding and guiding elements adapted to cooperate with externalextraneous abutments, two winding drums mounted for rotation on. saicframe at the rear end thereof remote from said cutting mechanism andwith which said flexible elements respectively cooperate, and poweractuated means controllable at will to cause rotation of said drums bothsimultaneously or either separately from the other-at a. relatively highspeed in one direction and at a relatively lowspeed in the oppositedirection without reversing said motor.

4-0. In a mining machine, the combination witha frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon, of feeding and guiding mechanism comprisingtwo flexible feeding and guiding elements adapted to cooperate withexternal extraneous abutments, two winding drums mounted for rotation onsaid frame about alined vertical axes and with which said flexibleelements respectively cooperate, and power actuated means controllableat will to cause rotation of said drums both simultaneously or eitherseparately from the other at either of two speeds.

41. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine'bottom' and" cuttingmechanism mounted thereon, of feeding and guiding mechanism comprisingtwo flexible feeding and guiding elements adapted to cooperate withexternal extraneous abutments, two winding drums mounted for rotation onsaid frame about vertical axes and withwhich said flexible elementsrespectively cooperate, and optionally controlled power actuated meansto cause rotation of said drums both simultaneously or either separatelyfrom the other at either of two speeds and including a plural speedtrans mission mechanism having slow speed driving means and fast speeddriving means and frictionally controlled means, one individual to eachof said fast and slow speed means, for

effecting selectively drive through said fast and slow speed means.

42. In a mining machine, the combination With a frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon including'a forwardly projecting cutter barand a cutter driving sprocket at the forward end of said frame, offeeding and guiding mechanism comprising two flexible feeding andguiding elements adapted to cooperate with external extraneousabutments, two winding drums mounted for rotation on said frame aboutalined axes and with which said flexible elements respectivelycooperate, said and fast speed driving means and frictional-i lycontrolled means, one individual to each of said fast and slow speedmeans, for effecting selectively drive through said fast and slow speedmeans.

43. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon, of feeding and guiding mechanism comprisingtwo flexible feeding and guiding elements adapted to cooperate withexternal extraneous abut-ments, two winding drums mounted for rotationon said frame about alined vertical axes and with which saidflexibleelements respectively cooperate, and optionally controlled poweractuated means to cause rotation of said drums both-simultaneously oreither separately from the other at either of two speeds and including aplural speed transmission mechanism having slow speed driving means andfast speed driving means and frictionally controlled means, oneindividual to each of said fast'and slow speed means, for effectingselectively drive through said fast and slow speed means.

44. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon including a forwardly projecting cutter barand a cutter driving sprocket at the forward end of said frame, offeeding and guiding mechanism comprising two flexible feeding andguiding elements adapted to cooperate with external extraneousabutment-s, two coaxial winding drums mounted for rotation on said frameat the end thereof remote from said cutter driving sprocket and withwhich said flexible elements respectively cooperate, and optionallycontrolled power actuated means to cause rotation of said drums bothsimultaneously or either separately from the other at either of twopredetermined speeds and including a fast speed gear train and a slowspeed gear train, and frictional devices for selectively rendering saidgear trains eflective.

45. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon including a forwardly projecting cutter barand acutter driving sprocket at the forward end of said frame, offeeding and guiding mechanism comprising two flexible feeding andguiding elements adapted to cooperate with external extraneousabutments, two coaxial winding drums mounted for rotation on said frameat the end thereof remote from said cutter driving sprocket and withwhich said flexible elements respectively cooperate, and optionallycontrolled power actuated means to cause rotation of said drums bothsimultaneously or either separately from the other at either of twospeeds and including a fast speed gear train and a slow speed gear trainand manually controllable friction clutches, one individual to each geartrain, for selectively rendering said gear trains effective.

46. In a mining machine, the combination with a frame adapted to restupon and slide end thereof remote from said cutter driving sprocket, andoptionally controlled power actuated means to cause rotation of saiddrums both simultaneously or either separately from the other at eitherof two speeds and including a fast speed gear train and a slow speedgear train and manually controllable friction clutches, one individualto each gear train, for selectively rendering said gear trainseffective.

47. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon, of feeding and guiding mechanism comprisingtwo flexible feeding and guiding elements adapted to cooperate withexternal extraneous abutments, two winding drums mounted for rotation onsaid frame about vertical axes and with which said flexible elementsrespective ly cooperate, and optionally controlled power actuated meansto cause rotation of said drums both simultaneously or either separatelyfrom the other at either of two speeds and including a fast speed geartrain and a slow speed gear train and manually controllable frictionclutches, one individual to each gear train, for selectively renderingsaid gear trains effective.

48. In a mining machine, the combination with a frame adapted to restupon and slide in any direction over the mine bottom and cuttingmechanism mounted thereon, of feeding and guiding mechanism comprisingtwo flexible feeding and guiding elements adapted to cooperate withexternal extraneous abutments, two winding drums mounted for rotation onsaid frame about alined vertical axes and with which said flexibleelements respectively cooperate, and optionally con trolled poweractuated means to cause rotation of said drums both simultaneously oreither separately from the other at either of two speeds and including afast speed gear train and a slow speed gear train and manuallycontrollable friction clutches, one inflividual to each gear train,forselectively rendering said gear trai s effective.

49. A mining mac ine feeding mechanism comprising relatively rotatablefeeding members each adapted to cooperate with flexible feeding means,and motor driven transmission mechanism for driving either of saidmembers separately or both simultaneously at relatively high speed or'atrelatively low speed including a plural predetermined speed transmissionmechanism having a fast speed terminal element and a slowspeed terminalelement, said elements being coaxially arranged and disposed on avertical axis,'an'd frictional controlling means for selectivelyeffecting drive through said terminal elements. 50. A mining machinefeeding mechanism comprising relatively rotatable feeding members eachadapted to cooperate with flexible feeding means, and motor driventransmission mechanism for driving either of said members separately orboth simultaneously at relatively high speed or at relatively low speedincluding a plural predetermined speed transmission mechanism having afast speed terminal element and a slow speed terminal element, saidelements being coaxially arranged and disposed on axes parallel with theaxes of said feeding members, and frictional controlling means forselectively effecting drive through said terminal elements.

51. A mining machine feeding mechanism comprising relatively rotatablefeeding members disposed on vertical axes and each adapted to cooperatedirectly with flexible feeding means, motor operated devices foreffecting rotation of either of said members separately or bothsimultaneously at relatively high speed or at relatively low speed andinclud ing a terminal driving element, and devices operable at will fordisconnecting said feeding members from the terminal driving element ofsaid motor operated devices to permit free rotation of said members. A

52. A mining machine feeding mechanism comprising relatively rotatablefeeding members disposed on alined'vertical axes and each adapted tocooperate directly withflexible feeding means, motor operated devicesfor effecting rotation of either of said members separately or bothsimultaneouslyat relatively high speed or at relatively low speed, anddevices operable at will for disconnecting said feeding members fromsaid motor operated devices to permit free rotation of said members.

53. In a mining machine feeding mechanism, relatively rotatable feedingmembers arranged in coaxial relation and each adapted to cooperatedirectly with flexible feeding means, and motor operated devices forrotating either of said members separately or both simultaneouslyincluding a'driving element arranged Within said feeding-members, and

clutch'dev ices carried said driving 'ele ment for connecting either orboth of said feeding members to said driving element. I

54. In a mining machine feeding mechanism, relatively rotatable feedingmembers arranged in coaxial relation and each adapted to cooperatedirectly with cxible feeding means, and motor operated devices for ro-'tating either of said members separately or both simultaneouslyincluding a driving ele ment arranged [within said feeding members 7 ingmember for connecting either or both "of said feeding members to saiddriving member. 56. In a mining machine feeding mechanism, relativelyrotatable feeding members arranged in coaxial relation and each adaptedto cooperate directly with flexible feeding means, and motor operateddevices forrotating'either of said members separatelyor bothsimultaneouslyincluding a cylindrical driving member disposed withinsaid 'members and onJwhich the latter are journaled, and clutchdevicesincluding shiftable clutch elements mounted directly on and rotatablebodily with said cylindrical driving member for connecting either or.both of said feeding members to said driving member or to permitrotation of said feeding members relative to said driving member. Y

' 57. In a mining machine feeding mechanism, relatively rotatablefeedingmembers disposed in coaxial relation and each adapted tocooperate with flexible feeding means, and motor operated devices forrotating either of said members separately or both simultaneouslyincluding a cylindrical driving member mounted for rotation within saidfeeding members and on which the latter are journaled, and clutchdevices operable at will dur ing rotation of said drivingmemberincluding shiftable clutch elements mounted directly on androtatable bodily with said cylindrical driving member for connectingeither or both of said feeding members to said driving member forrotation therewith or to permit rotation of said feeding membersrelative to said driving member.

' 58. In a mining machine feeding mecha- I nism, relatively rotatablefeeding members I disposed incoaxial relation and each adapt ed tocooperate with flexible feeding means, and motor operated devices forrotating either of said members separately or both s1- multaneouslyincluding a cylindrical driving driving member.

59. In a mining machine, a motor, and machine feeding mechanism driventhereby including coaxially arranged relatively rotatable feed operatingand controlling members disposed on a vertical axis and each adapted tocooperate with flexible feed means. and means for connecting saidmembers either independently of the other in driving relation with saidmotor.

60. In a mining machine, a motor, and machine feeding means driventhereby including coaxial relatively rotatable feed operating andcontrolling members arranged in substantially end abutting relation withtheir axes parallel to a transverse vertical plane and each adapted tocooperate with flexible feeding means, a driving member, and clutchmechanism for connecting said feed operating and controllingmemberseither independ ently of the other to said driving member. 61. Ina mining machine, a machine frame adapted to rest upon and slide in anydirection over the mine bottom, a motor carried by said frame, cuttingmechanism driven by said motor including a kerf cutter projecting fromsaid frame, and feeding means driven by said motor including coaxiallyarranged relatively rotatable feed operating and con trolling membersdisposed on a vertical axis and each adapted to cooperate with flexiblefeeding means and driving and controlling means for said ,members fordriving said members either independently of the other at either arelatively fast speed or a relatively slow speed including a rotatabledriving member coaxial with said members, clutch devices carried by saiddriving member, and means for actuating said clutch devices to connecteither or both of said feed operating and controlling members to saiddriving member.

62. In a mining machine, a machine frame adapted to rest upon and slidein any direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven by said motorincluding coaxially arranged relatively rotatable feed operating andcontrolling membersdisposed on a vertical axis and each adapted to'cooperate with flexible feeding means and driving and controlling meansfor said member's for driving said members either independently of theother at either a relatively fast speed or a relatively slow speedincluding a rotatable driving member disposed within said members, agear secured to said driving member, a'pinion meshing with said gear, ahollow transmission shaft driving said pinion, clutch devices carried bysaid driving member, and means including an operating element extendingthrough said hollow shaft and said pinion for actuating said clutchdevices to connect either or both of said feed operating and controllingmembers to said driving member.

63. In a mining machine, a machine frame adapted to rest upon and slidein any direction over the mine bottom, a motor carried by said frame,cutting mechanism driven by said motor including a kerf cutterprojecting from said frame, and feeding means driven by said motorincluding coaxially arranged relatively rotatable feed operating andcontrolling members disposed on a vertical axis and each adapted tocooperate with flexible feeding means and driving and controlling meansfor said members for driving said members either independently of theother at either a relatively fast speed or a relatively slow speedincluding a rotatable driving member coaxial with said members, clutchdevices carried by said driving member for connecting either or both ofsaid feed operating and controlling members thereto and including clutchelements shiftable into engagement with either member, and a rotatablecam device for shifting said clutch devices. V

64:. In a mining machine, feeding mechanism including relativelyrotatable feed op erating and controlling drums each adapted tocooperate with a flexible feed cable, and mechanism for driving saiddrums either independently of the other including a rotatable drivermemberdisposed within said drums and clutch devices for connectingeither or both drums to said member and including slidableplungers'carried by said driver member, and cam means for actuating saidplungers.

65. In a mining machine, feeding mechanism including relativelyrotatable feed operating and controlling drums each adapted to cooperatewith a flexible feed cable, and mechanism for driving said drums eitherindependently of the other including a rotatable driver member disposedwithin said drums and clutch devices for connecting either or both drumsto said member and in cluding sliding discs engageable with sockets insaid drums, and rotatable cam means for sliding said discs intoengagement with said hollow transmission shaft, clutch devices car--ried by said member for connecting either or both of said drums thereto,and actuating means for said clutch devices including an operatingelement extending through said hollow shaft.

67. In a mining machine, feeding means including relatively rotatablefeed operating and controlling drums. each adapted to co-' operate witha flexible feed cable, and mechanism driving said drums eitherindependently of the other including a rotatable driver member arrangedcoaxially with said drums, means for rotating said member including ahollow transmission shaft, clutch devices carried by said member forconnecting either or both of said drums thereto, and actuating means forsaid clutch devices including a ro-' tatable operating member disposedon an axis coaxial with said driver member and rotating means for saidclutch operating member including an operating element extending throughsaid hollow shaft.

68. In a mining machine feeding mechanism, relatively rotatable feedingmembers arranged in coaxial relation and each adapted to cooperatedirectly with flexible feeding means, and motor operated devices forrotating said members either independently of the other including adriving element arranged within said feeding members and on which one ofthe same is journaled, and clutch devices including shiftable clutchelements mounted directly on and rotatable bodily with said drivingelement for connecting either or both of said feeding members to saiddriving element.

69. In a mining machine feeding mechanism, relatively rotatable feedingmembers disposed in coaxial relation and each adapted to cooperatedirectly with flexible feeding means, and motor operated devicesforrotating said members either independently of the other including adriving member arranged coaxially with said feeding members, and clutchdevices carried by said driving member for connecting either or both ofsaid feeding members to said driving member.

In testimony whereof I affix my signature.

MORRIS P. .I-IOLMES.

